The Miami Heat were a frontrunner in the LeBron sweepstakes, with many people around the NBA, including their social media team, believing James was going to sign there. AdvertisementAdvertisement AdvertisementSince LeBron waited until the end of free agency to make his decision, there aren't many options left for Miami. Still, there are three free agents the Heat could target to establish themselves as legitimate contenders. AdvertisementAdvertisement AdvertisementDeRozan is entering his 17th NBA season and proved last year that he still has plenty left in the tank. Mathurin is the youngest and most athletic option, but he would also be the most difficult player for the Heat to acquire.